GM Service Manual Online
For 1990-2009 cars only

Name

Location

Locator View

Connector End View

Body Control Module (BCM)

RH footwell, mounted to the toe board, behind the carpet

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Body Control System Connector End Views

Brake Pressure Modulator Valve (BPMV)

Rear of the vehicle, behind the center of the axle

Antilock Brake System Component Views in Antilock Brake System

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Data Link Connector (DLC)

LH side of instrument panel, below the steering column

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-

Electronic Brake Traction Control Module (EBTCM)

Rear of the vehicle, behind the center of the axle

Antilock Brake System Component Views in Antilock Brake System

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Electronic Suspension Control (ESC) Module

Rear compartment, inside the LH storage compartment

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Suspension Controls Connector End Views

Electronic Traction/Suspension Control Switch

Center console, between the shifter and storage compartment

Power and Grounding Component Views in Wiring Systems

Body Control System Connector End Views

Instrument Cluster

Top LH side of instrument panel, behind the steering wheel

Power and Grounding Component Views in Wiring Systems

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Instrument Panel Electrical Center

RH footwell, mounted on the toe board, behind the carpet

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-

LF Wheel Speed Sensor

LF wheel between steering knuckle and brake rotor

Antilock Brake System Component Views in Antilock Brake System

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LR Wheel Speed Sensor

Rear LH wheel between steering knuckle and brake rotor

-

-

Magnasteer Actuator

LH side of the steering gear

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Steering Assist Connector End Views in Variable Effort Steering

Powertrain Control Module (PCM)

RH side of engine compartment, between the wheelhouse and the dash panel, below the battery

Engine Controls Component Views in Engine Controls 5.7L

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RF Wheel Speed Sensor

Front RH wheel between steering knuckle and brake rotor

Antilock Brake System Component Views in Antilock Brake System

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RR Wheel Speed Sensor

Rear RH wheel between steering knuckle and brake rotor

-

-

Star Connector #1

Instrument panel harness, serial data

-

Data Link Communications Connector End Views in Wiring Systems

Steering Wheel Position Sensor

Base of the steering column, under the instrument panel

-

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Stoplamp Switch

Mounted on the bracket in front of the brake pedal

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Automatic Transmission Inline Harness Connector End View in Automatic Transmission

Underhood Electrical Center

RH side of the engine compartment, between the wheelhouse and the dash panel, front of the battery

Power and Grounding Component Views in Wiring Systems

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C105 (2 cavities)

Transmission harness to LF wheel speed sensor

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-

C108 (2 cavities)

Transmission harness to RF wheel speed sensor

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C140 (10 cavities)

Transmission harness to forward lamp harness, RH side in engine compartment

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-

C142 (20 cavities)

Engine harness to transmission harness, RH side rear of engine compartment

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-

C205 (6 cavities)

Instrument panel harness to steering column harness, at the base of steering column - for SIR inflator module

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-

P200

Instrument panel harness, RH side of Instrument panel on dash panel

-

-

S206

Instrument panel harness, approximately 14.0 cm riht of the blower motor control module connector breakout (CKT 1132)

-

-

S404 (w/F45)

Transmission harness, approximately 6.5 cm forward of EBTCM breakout (CKT 641)

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S406

Transmission harness, approximately 29.5 cm from EBTCM toward RH rear shock absorber (CKT 820)

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-

G201

Instrument panel harness, at base of LH A Pillar. SP201 is attached

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-

G401

Transmission harness, LH rear of vehicle

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-

G402

Transmission harness, RH rear of vehicle

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